{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "447081832",
    "entityType": "User",
    "nonce": "0x857599de83f2e1290fd624268828741cba73feeda42eea3ef509507cc55cb892",
    "signature": "0xba39bebc78c758cc1e8022cb4423fb9bd21b63eed32cc67f19aba266613c7ae7330079cd3a37d21f544ffb181bef06ed4003912a4f4db52733499834b5d38a641c",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}